CN106592609A - Operation method for laying lattice column in shaft of deep well - Google Patents
Operation method for laying lattice column in shaft of deep well Download PDFInfo
- Publication number
- CN106592609A CN106592609A CN201710001831.4A CN201710001831A CN106592609A CN 106592609 A CN106592609 A CN 106592609A CN 201710001831 A CN201710001831 A CN 201710001831A CN 106592609 A CN106592609 A CN 106592609A
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- China
- Prior art keywords
- lattice column
- well
- deep
- guiding trestle
- deep well
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
- E02D17/083—Shoring struts
Abstract
The invention discloses an operation method for laying a lattice column in a shaft of a deep well. The operation method comprises the following steps of first fixing the wall of the well by adopting mortar, and then mounting guide brackets outside the well, wherein two guide brackets are cooperatively connected through bolts and nuts according to the structural form of the lattice column; and subsequently, carrying out setting-out measurement and marking on the directions x and y of the lattice column needing to be mounted at a mouth of the well, then putting the guide brackets into the deep well according to the marked directions x and y, then putting the lattice column into the deep well under the limit of the guide brackets through suspension rings, and finally, taking the guide brackets out from the well, wherein, in addition, the guide brackets are formed by mutually connecting elevation adjusting mechanisms and ground brackets. By using the operation method for laying the lattice column in the shaft of the deep well, the problems that the lattice column easily generates rotary misplacement to produce a potential safety hazard when being laid, and an auxiliary device for laying the lattice column is used for accurately connecting the lattice column uneasily, so as to cause the waste of manual labor force and a working time, in the prior art are solved.
Description
Technical field
The present invention relates to underground deep basal pit lattice column technical field of construction, and in particular to one kind is for placement lattice in deep well
The operational approach of structure post.
Background technology
When deep foundation pit construction is built in track traffic or room, for the foundation pit supporting construction of fender post+inner support form, in base
Hole width exceed certain limit when, set up bracing members when need vertical supporting is set in the middle part of bracing members, prevent support it is long, across
Middle amount of deflection is excessive, bracing members (or concrete support) stress is affected, and foundation ditch is caused danger, and this vertical supporting is referred to as " lattice
Post ".Lattice column is typically welded into rectangle using shaped steel, in advance by imbedding setting position in foundation ditch in the method for surface drilling.
Because lattice column is the rectangular configuration that shaped steel is welded into, when in use with the excavation of foundation ditch layer and section, lattice column and foundation ditch
Interior horizontal bracing members, longitudinal linking beam (rectangular elements being also welded into for shaped steel) 3 frameworks collectively form X, Y, Z three dimensions
Structure, if lattice column is laid occurred rotary shifted (X, Y-direction produce deviation), then, will when longitudinal linking beam is laid
There is gap or angle, not closely connected, generation potential safety hazard.Therefore, when early stage lays lattice column toward in hole to its X, Y direction
Positioning it is very crucial.
The positioner of lattice column be present in prior art：When lattice column bottom is uplift pile or supports stake
During structure, in addition it is also necessary to one pile cages is set in lattice column bottom, makes pile cages be fixed together with lattice column, existing skill
It is first will to be placed under the pile cages that connected and lattice column in when art installs lattice column, makes lattice column be partially left at well head
Top, is then enclosed within the positioner for adjusting lattice column direction on lattice column using crane, then slowly descends locator, most
Adjust X, the Y direction of lattice column further according to positioner afterwards, but this mode needs to use arm longer when installing lattice column
Crane, and be not easy that positioner is disposably enclosed within lattice column, work efficiency is relatively low.
In addition, deep-well is after accomplishing fluently, the borehole wall is typically rough, and borehole wall Jing often occurs subsiding the feelings for coming off
Condition, the soil for coming off easily causes lattice column inclination, affects the stability of lattice column and the accuracy of positioning.
The content of the invention
Purpose to be solved by this invention is to provide a kind of operational approach for laying lattice column in deep well, is solved
When lattice column is laid, deep-well wall easily subsides, and affects the stability of lattice column and the accuracy of positioning；Solve when needs exist
When lattice column bottom arranges a pile cages, the requirement to suspension arm of crane is higher and is not easy disposably to be enclosed within positioner
On lattice column, cause the problem that work efficiency is relatively low.
The present invention is achieved through the following technical solutions：
A kind of operational approach for laying lattice column in deep well, comprises the following steps：
A：The borehole wall is fixed using mortar：After deep-well is accomplished fluently, a sleeve pipe contour with deep-well is probeed in deep-well,
Mortar is filled between deep-well and the gap of sleeve pipe；
B：Guiding trestle is installed outside well：On the ground two guiding trestles are passed through into spiral shell according to the version of lattice column
Bolt, nut screw connection connection；
C：It is directed to support to be put in well：Unwrapping wire survey is carried out to x, y direction of required lattice column to be mounted in deep-well mouth
Amount mark, is then directed to support and is put in deep-well according to x, y direction of mark, and is directed to one end of support and is fixed on ground
On face；
D：Lattice column is put in well：Connect two suspension ring respectively in the opposed inner walls face of lattice column, by suspension ring lattice are made
Structure post is put in deep-well under the restriction of guiding trestle, when lattice column reaches elevation location, in suspension ring absolute altitude bar load is inserted into
Firmly lattice column, and absolute altitude bar is placed on guiding trestle；
E：It is directed to support to take out from well：Sand is filled in lattice column, is then extracted out on the absolute altitude bar in suspension ring, most
After be directed to support taking-up.
Further, after is accomplished fluently deep-well using prior art, compared to existing technology, step A of the present invention is to accomplishing fluently
Deep-well wall reinforced using mortar, prevent from laying lattice column and during guider, the soil in deep-well wall caves in
Fall, impact is accurately positioned to guider and lattice column.
In addition, the auxiliary device of the present invention is not integrally molded molding, by two guiding trestles according to lattice in step B
The version of post is connected by bolt, nut screw connection, so compared to existing technology, the guiding trestle of the present invention is with more flexible
Property, add multiple rubber seal or iron ring between the screw bolt and nut of connection, so can be used for laying different volumes
Lattice column.
In step C when lattice column bottom is uplift pile or support pilework, prior art is by pile cages and lattice
Post is fixed together, and a locating support is then covered on lattice column again on stand-down.The present invention changes placement mode,
After deep-well mouth pair determines that the X of placement lattice column, Y direction measurement and positioning are accurate, two elevation adjustment mechanisms parcels are made to persistence
In the lattice column of deep-well mouth upper end, and the form according to lattice column connects into an entirety by bolt, nut screw connection, then will
Form overall guiding trestle to be put in deep-well along the X, Y direction line having good positioning.And it is directed to one end of support to fix
On the ground.The guiding trestle for fixing on the ground plays the supporting role to the guiding trestle in deep-well, compared to existing technology,
The demand to suspension arm of crane length is present invention, avoiding, be can reach by such mode and lattice column is disposably accurately positioned set
Effect firmly, is conducive to saving working time and manual labor, improves work efficiency.
When deep-well bottom is normal configuration, it is not necessary to when installing pile cages, simply first directly by along the structure of lattice column
Form installs guiding trestle in deep-well, and lattice column is then transferred again；The lattice column laid is determined in deep-well mouth pair
X, Y direction measure after positioning, then two guiding trestles are passed through according to the version of lattice column on the ground
Bolt, nut screw connection connection, and be put in deep-well along the X, Y direction line having good positioning, and it is solid to be directed to one end of support
Determine on the ground.
In step D, in the opposed inner walls face of lattice column two suspension ring are connected respectively, suspension ring are caught on using crane, only need people
Work gently moves lattice column in shaft mouth side, makes lattice column alignment guide support mouth, then crane by lattice column in guiding trestle
It is put in deep-well under restriction.The suspension ring being arranged on lattice column are made up of a long bolt, and one end of long bolt is arranged to
" U " type, " U " type end matches with the absolute altitude bar in ground upper bracket, and the other end is welded on lattice column wall.When lattice column is arrived
Up to staff's setting elevation location when, be inserted into absolute altitude bar at " U " the type end of suspension ring and carry on a shoulder pole lattice column, and absolute altitude bar is put
On the guiding trestle for fixing on the ground, and absolute altitude bar is mutually perpendicular to the guiding trestle put on the ground, from ground
From the point of view of overlooking, absolute altitude bar and guiding trestle form " well " font.Pass through lattice column elevation adjustment mechanism compared to existing technology
It is inserted into lattice column upper surface being connected with lattice column from foundation ditch, then adjusts the mode of the orientation of lattice column, by step C
With step D, just lattice column installation can be accurately positioned into light in well head, can reach and lattice column is disposably accurately positioned set
Effect firmly, is conducive to saving working time and manual labor.Need compared to existing technology to arrange one in lattice column bottom
During pile cages, when being installed for the auxiliary device for laying lattice column using the longer crane of arm, the present invention is using guiding
Support entangled and connected by bolt, nut screw connection after lattice column, it is to avoid demand to suspension arm of crane length, is conducive to saving money
Source, it is cost-effective.
Step E realizes the process for being directed to support taking-up, and it is for the ease of later foundation ditch that sand is filled in lattice column
During excavation, lattice column is easily dug out, the lattice column for digging out is intact；Then the absolute altitude bar in suspension ring is extracted out, finally using crane
It is directed to support taking-up.
Mortar described in step A is 5 according to ratio of weight and number by water, quartz sand and cement：4：10 ratio mix homogeneously.
Further, with cement as cementing agent, with quartz sand as proppant, water, quartz sand and cement are according to weight for the present invention
Amount portion rate is 5：4：10 ratio reconciles into mortar, and 5：4：10 ratio will not make mortar too dry, be conducive to mortar rapid-result soon
Type.First a sleeve pipe contour with deep-well is probeed in deep-well, mortar is then filled between deep-well and the gap of sleeve pipe, 12 is little
When after mortar will solidify, reach by the borehole wall fix purpose.
Guiding trestle described in step B includes an elevation adjustment mechanism and a ground upper bracket, ground upper bracket and elevation
Adjustment mechanism is welded to connect.Further, guiding trestle connect when be exactly by elevation adjustment mechanism according to lattice column structure shape
Formula is connected by bolt, nut screw connection.Ground upper bracket is to refer to the guiding trestle fixed on the ground in step C, ground upper bracket
Can be made up of the I-steel of I16 or I18 or Two bors d's oeuveres I16 or I18 channel-section steel, ground upper bracket is placed on aperture ground, rise and hold underground part
The effect for dividing.
Described elevation adjustment mechanism includes two angle steel and the several reinforcement locating rods being arranged between two angle steel.Enter
One step, for isosceles right triangle angle steel, the right angle inwall of angle steel is adjacent with lattice column, is arranged on for the angle steel that the present invention is adopted
Reinforcement locating rod between two angle steel is weldingly connected with the outer wall of angle steel.The purpose for arranging reinforcement locating rod is to prevent 4 angles
Steel is shifted or deformed.
A guiding trestle connecting plate is additionally provided with each angle steel, on described guiding trestle connecting plate spiral shell is provided with
Pit.Further, guiding trestle connecting plate is welded on the right angle outer wall of angle steel, on same angle steel, guiding trestle connection
, not in the same face, guiding trestle connecting plate is connected and composed by two blocks of steel plates, steel for the pad of plate and the pad of reinforcement locating rod
Angle between plate is 90 °, and a screwed hole is both provided with each guiding trestle connecting plate, and bolt is adjacent through two
Guiding trestle connecting plate on screwed hole, then fixed with nut, adopt in such a way the height in two guiding trestles
Journey adjustment mechanism is coupled together.
When step D is put into lattice column in well, the distance between right angle inwall and lattice column outer wall of the angle steel
For 0.5～1cm.Further, it is 0.5～1cm by the distance between the right angle inwall of angle steel and lattice column outer wall, had both been easy to suitable
Sharp lower section lattice column, can to greatest extent ensure that lattice column plane x, y direction is accurate again.
The present invention compared with prior art, has the following advantages and advantages：
1st, a kind of operational approach for laying lattice column in deep well of the present invention, when lattice column is only installed, lattice column
Along the guiding trestle decentralization having good positioning, solve lattice column of the prior art and easily occur rotary shifted when laying and produce
The problem of raw potential safety hazard；When lattice column bottom is uplift pile or support pilework, wrap two elevation adjustment mechanisms
The lattice column of deep-well mouth upper end is stayed in, and the form according to lattice column connects into an entirety by bolt, nut screw connection, then
The guiding trestle for forming overall is put in deep-well along the X, Y direction line having good positioning, by such mode can reach by
Lattice column is disposably accurately positioned the effect entangled, and is conducive to saving working time and manual labor, improves work efficiency；
2nd, a kind of operational approach for laying lattice column in deep well of the present invention, first by a sleeve pipe contour with deep-well
Probe in deep-well, mortar is then filled between deep-well and the gap of sleeve pipe, mortar is by water, quartz sand and cement according to weight portion
Number is than being 5：4：10 ratio mix homogeneously, is conducive to mortar rapid shaping, the purpose of the fixed borehole wall is reached, by with upper type
Solve the deep-well wall when lattice column is laid easily to subside, affect the problem of the accuracy of the stability and positioning of lattice column；
3rd, a kind of operational approach for laying lattice column in deep well of the present invention, by the right angle inwall and lattice column of angle steel
The distance between outer wall is 0.5～1cm, has both been easy to smoothly lower section lattice column, and lattice column plane x, y side can be to greatest extent ensured again
To accurate..
Description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation after two guiding trestle installations of the present invention.
Labelling and corresponding parts title in accompanying drawing：
1- ground upper bracket, 2- angle steel, 3- strengthens locating rod, 4- guiding trestle connecting plates, 5- screwed holes, 6- lattice columns, 7-
Absolute altitude bar, 8- suspension ring, 9- mortars.
Specific embodiment
To make the object, technical solutions and advantages of the present invention become more apparent, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and the exemplary embodiment of the present invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment
As shown in figure 1, a kind of operational approach for laying lattice column in deep well of the present invention, comprises the following steps：
A：The borehole wall is fixed using mortar：After deep-well is accomplished fluently, a sleeve pipe contour with deep-well is probeed in deep-well,
Mortar 9 is filled between deep-well and the gap of sleeve pipe；
B：Guiding trestle is installed outside well：Two guiding trestles are passed through according to the version of lattice column 6 on the ground
Bolt, nut screw connection connection；
C：It is directed to support to be put in well：Unwrapping wire survey is carried out to x, y direction of required lattice column to be mounted 6 in deep-well mouth
Amount mark, is then directed to support and is put in deep-well according to x, y direction of mark, and is directed to one end of support and is fixed on ground
On face；
D：Lattice column is put in well：Connect two suspension ring 8 respectively in the opposed inner walls face of lattice column 6, made by suspension ring 8
Lattice column 6 is put in deep-well under the restriction of guiding trestle, when lattice column 6 reaches elevation location, in suspension ring absolute altitude is inserted into
Bar 7 carries on a shoulder pole lattice column 6, and absolute altitude bar 7 is placed on guiding trestle；
E：It is directed to support to take out from well：Sand is filled in lattice column 6, then takes out on the absolute altitude bar 7 in suspension ring 8
Go out, be finally directed to support taking-up.
Mortar 9 described in step A is 5 according to ratio of weight and number by water, quartz sand and cement：4：10 ratio mixing is equal
It is even.Guiding trestle described in step B includes an elevation adjustment mechanism and a ground upper bracket 1, and ground upper bracket 1 is adjusted with elevation
Mechanism is welded to connect.Described elevation adjustment mechanism is determined including two angle steel 2 and the several reinforcements being arranged between two angle steel 2
Position bar 3.A guiding trestle connecting plate 4 is additionally provided with each angle steel 2, is provided with described guiding trestle connecting plate 4
Screwed hole 5.When step D is put into lattice column 6 in well, between the right angle inwall and the outer wall of lattice column 6 of the angle steel 2 away from
From for 1cm.The elevation adjustment mechanism of the present invention is located underground, and the height of elevation adjustment mechanism is 4m, and described angle steel is ∠
The equal leg angle of 100*100*6mm.It is more than elevation adjustment mechanism height in the height of deep-well, deep-well is accomplished fluently, using jacket casing and sand
Slurry Gu Bi, lays successively guiding trestle, lattice column, the absolute altitude bar for connecting, and sand is then filled in lattice column, then takes successively
Go out absolute altitude bar, guiding trestle.
Above-described specific embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that the specific embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, all any modification, equivalent substitution and improvements within the spirit and principles in the present invention, done etc. all should include
Within protection scope of the present invention.
Claims (6)
1. it is a kind of in deep well lay lattice column operational approach, it is characterised in that comprise the following steps：
A：The borehole wall is fixed using mortar：After deep-well is accomplished fluently, a sleeve pipe contour with deep-well is probeed in deep-well, in depth
Mortar (9) is filled between well and the gap of sleeve pipe；
B：Guiding trestle is installed outside well：On the ground two guiding trestles are passed through into spiral shell according to the version of lattice column (6)
Bolt, nut screw connection connection；
C：It is directed to support to be put in well：City's roads are carried out to x, y direction of required lattice column (6) to be mounted in deep-well mouth
Mark, is then directed to support and is put in deep-well according to x, y direction of mark, and is directed to one end of support and is fixed on ground
On；
D：Lattice column is put in well：Connect two suspension ring (8) respectively in the opposed inner walls face of lattice column (6), by suspension ring (8)
Lattice column (6) is set to be put under the restriction of guiding trestle in deep-well, when lattice column (6) reaches elevation location, in suspension ring interpolation
Enter absolute altitude bar (7) and carry on a shoulder pole lattice column (6), and absolute altitude bar (7) is placed on guiding trestle；
E：It is directed to support to take out from well：Sand is filled in lattice column (6), then takes out on the absolute altitude bar (7) in suspension ring (8)
Go out, be finally directed to support taking-up.
2. it is according to claim 1 it is a kind of in deep well lay lattice column operational approach, it is characterised in that step
Mortar (9) described in A is 5 according to ratio of weight and number by water, quartz sand and cement：4：10 ratio mix homogeneously.
3. it is according to claim 1 it is a kind of in deep well lay lattice column operational approach, it is characterised in that step
Guiding trestle described in B includes an elevation adjustment mechanism and ground upper bracket (1), and ground upper bracket (1) adjusts machine with elevation
Structure is welded to connect.
4. it is according to claim 3 it is a kind of in deep well lay lattice column operational approach, it is characterised in that it is described
Elevation adjustment mechanism include two angle steel (2) and several reinforcement locating rods (3) for being arranged between two angle steel (2).
5. it is according to claim 4 it is a kind of in deep well lay lattice column operational approach, it is characterised in that every
A guiding trestle connecting plate (4) is additionally provided with individual angle steel (2), on described guiding trestle connecting plate (4) screw thread is provided with
Hole (5).
6. it is according to claim 1 it is a kind of in deep well lay lattice column operational approach, it is characterised in that it is described
When step D is put into lattice column (6) in well, the distance between the right angle inwall of the angle steel (2) and lattice column (6) outer wall are
0.5～1cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710001831.4A CN106592609B (en) | 2017-01-03 | 2017-01-03 | A kind of operating method for placing lattice column in deep well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710001831.4A CN106592609B (en) | 2017-01-03 | 2017-01-03 | A kind of operating method for placing lattice column in deep well |
Publications (2)
| Publication Number | Publication Date |
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| CN106592609A true CN106592609A (en) | 2017-04-26 |
| CN106592609B CN106592609B (en) | 2018-10-02 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011089320A (en) * | 2009-10-23 | 2011-05-06 | Taisei Corp | Method for constructing precast basement column |
| CN102121247A (en) * | 2011-01-13 | 2011-07-13 | 中建八局第三建设有限公司 | Locating frame of underground ultra-long support steel upright |
| CN102767182A (en) * | 2012-07-18 | 2012-11-07 | 上海建工二建集团有限公司 | Verticality adjustment system for lattice column correcting mount and construction method thereof |
| CN102912992A (en) * | 2012-10-25 | 2013-02-06 | 上海建工二建集团有限公司 | Integrated perpendicularity adjusting equipment and perpendicularity adjusting process |
| CN104358262A (en) * | 2014-09-29 | 2015-02-18 | 中国建筑第八工程局有限公司 | Detachable tool type deep foundation pit inner support guide pillar and construction method |
| CN204298830U (en) * | 2014-11-03 | 2015-04-29 | 天津第二市政公路工程有限公司 | Based on lattice column plane in subterranean excavation and elevation regulation device |
| CN105951747A (en) * | 2016-05-10 | 2016-09-21 | 温州市建设监理有限公司 | Construction method for embedding latticed column through reverse building method |
-
2017
- 2017-01-03 CN CN201710001831.4A patent/CN106592609B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011089320A (en) * | 2009-10-23 | 2011-05-06 | Taisei Corp | Method for constructing precast basement column |
| CN102121247A (en) * | 2011-01-13 | 2011-07-13 | 中建八局第三建设有限公司 | Locating frame of underground ultra-long support steel upright |
| CN102767182A (en) * | 2012-07-18 | 2012-11-07 | 上海建工二建集团有限公司 | Verticality adjustment system for lattice column correcting mount and construction method thereof |
| CN102912992A (en) * | 2012-10-25 | 2013-02-06 | 上海建工二建集团有限公司 | Integrated perpendicularity adjusting equipment and perpendicularity adjusting process |
| CN104358262A (en) * | 2014-09-29 | 2015-02-18 | 中国建筑第八工程局有限公司 | Detachable tool type deep foundation pit inner support guide pillar and construction method |
| CN204298830U (en) * | 2014-11-03 | 2015-04-29 | 天津第二市政公路工程有限公司 | Based on lattice column plane in subterranean excavation and elevation regulation device |
| CN105951747A (en) * | 2016-05-10 | 2016-09-21 | 温州市建设监理有限公司 | Construction method for embedding latticed column through reverse building method |
Non-Patent Citations (2)
| Title |
|---|
| 向泽等: "《基于孔口定位器的格构柱位移控制研究》", 《西南师范大学学报（自然科学版）》 * |
| 贺小村: "《斯托克曼商业中心逆作施工格构柱安装定位技术》", 《施工技术》 * |
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